US9541087B2 - Sealing grommet for connection between terminal housing and interior of sealed compressor - Google Patents

Sealing grommet for connection between terminal housing and interior of sealed compressor Download PDF

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Publication number
US9541087B2
US9541087B2 US13/178,555 US201113178555A US9541087B2 US 9541087 B2 US9541087 B2 US 9541087B2 US 201113178555 A US201113178555 A US 201113178555A US 9541087 B2 US9541087 B2 US 9541087B2
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Prior art keywords
shell
grommet
electric
compressor
terminal
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US13/178,555
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US20130011278A1 (en
Inventor
Lamar Wilson Thibodeaux
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Danfoss Scroll Technologies LLC
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Danfoss Scroll Technologies LLC
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Publication date
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Priority to US13/178,555 priority Critical patent/US9541087B2/en
Assigned to DANFOSS SCROLL TECHNOLOGIES LLC reassignment DANFOSS SCROLL TECHNOLOGIES LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: THIBODEAUX, LAMAR WILSON
Priority to FR1256443A priority patent/FR2977741B1/en
Priority to CN201210233236.0A priority patent/CN102865209B/en
Priority to DE102012013507A priority patent/DE102012013507A1/en
Publication of US20130011278A1 publication Critical patent/US20130011278A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/803—Electric connectors or cables; Fittings therefor

Definitions

  • This application relates to a sealing grommet for sealing between the walls of a terminal housing, and a sealed compressor shell.
  • Compressors are known and typically include a motor driving a compressor pump unit within a sealed shell.
  • the shell is typically sealed, as refrigerant circulates within the shell to cool the motor. Even though the shell is sealed, an electric connection must still extend into the shell to supply power to the motor.
  • connection through the shell must be adequately sealed, and the arrangement of a terminal housing and compressor shell has made this a challenge.
  • a sealed compressor has an electric motor received within a hermetically sealed shell.
  • the electric motor drives a compressor pump unit.
  • An electric connection provides electric power to the motor.
  • a terminal housing is mounted on the shell, with a terminal plug for supplying electrical power from outside of the shell into a connector within the shell.
  • a grommet is at an opening in the shell which allows passage of the electric connection from the terminal plug to the electric connector.
  • the grommet has a first surface positioned on an opposed side of a wall of a housing spaced from the shell, and a second surface sealing against the shell.
  • the grommet has an interior portion allowing passage of the electrical connections from the terminal plug into the electric connector within the shell.
  • FIG. 1 shows an electric terminal connection through a sealed compressor shell.
  • FIG. 2 is a top view of a first embodiment grommet.
  • FIG. 3 is a cross-sectional view through the FIG. 2 grommet.
  • FIG. 4 shows a second embodiment grommet.
  • FIG. 5 shows a third embodiment grommet.
  • FIG. 1 shows a sealed compressor 20 incorporating a compressor pump unit 22 and an electric motor 24 .
  • a shell 26 defines an interior which is sealed against fluid leakage. Refrigerant typically flows around the motor 24 within the shell 26 . Electric power must be supplied to the motor 24 , and an electric connector 28 is shown inward of the shell 26 .
  • a terminal connection 29 is shown extending from a terminal plug 31 which is connected within a fence or housing 42 .
  • a cable 30 plugs into an end of the terminal connection 31 outwardly of the housing 42 .
  • a hole 33 allows the terminal plug 31 to exit the housing.
  • a cover 46 is shown bolted at 200 to the housing at an ear 204 and hole 202 in cover 46 .
  • a grommet 32 provides a fluid tight seal between the housing 42 and the shell 26 . As shown, the grommet 32 has ears 44 sitting outwardly of an end of the housing 42 , and an end 36 which seals against the shell 26 .
  • a spring 50 is schematically biasing the terminal plug 46 to maintain the connection between connector 28 and pin 29 .
  • Grommet 32 is shown in a top view in FIG. 2 . As shown, a bore 103 is hollow, and allows electrical connections to pass through. An upper circular portion 102 sits against the terminal plug (see FIG. 1 ) to provide a seal against the plug. An outer portion 104 sits outwardly of the terminal plug 42 to provide a seal.
  • a lower portion 106 sits within a bore through the compressor shell 26 . As shown in FIGS. 2 and 3 , the portion 106 extends further than does the portion 104 . The portion 104 sits inwardly of the housing 42 , and the portion 106 sits flush with the compressor shell 26 .
  • Cutout portions 108 surround holes 109 for the bolts which will connect the terminal housing to the shell.
  • an embodiment 132 of the grommet has a hollow interior bore, portion 116 which sits within the compressor shell, portion 110 which sits inwardly of the terminal box, and portion 102 which sits upwardly into the terminal plug. Notches 112 allow the passage of bolts.
  • FIG. 5 shows an embodiment 198 , wherein the bore is sealed by a portion 200 , but pin holes 202 are formed through the grommet for passage of the connecting pin.
  • the spring 50 is shown schematically, however, details of the spring are better disclosed in co-pending U.S. patent application Ser. No. 13/178,616, filed on even date herewith, and entitled “Secure Connection Terminal for Hermetic Compressor.”
  • the cable is better disclosed in co-pending U.S. application Ser. No. 13/178,568, filed on even date herewith, and entitled “Terminal Connection for Sealed Compressor,” now U.S. Pat. No. 8,328,566, issued Dec. 11, 2012.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A sealed compressor has an electric motor received within a hermetically sealed shell. The electric motor drives a compressor pump unit. An electric connection provides electric power to the motor. A terminal housing is mounted on the shell, with a terminal plug for supplying electrical power from outside of the shell into a connector within the shell. A grommet is at an opening in the shell which allows passage of the electric connector from the terminal plug to the electric connection. The grommet has a first surface positioned on an opposed side of a wall of a housing spaced from the shell, and a second surface sealing against the shell. The grommet has an interior portion allowing passage of the electrical connections from the terminal plug into the electric connector within the shell.

Description

BACKGROUND
This application relates to a sealing grommet for sealing between the walls of a terminal housing, and a sealed compressor shell.
Compressors are known and typically include a motor driving a compressor pump unit within a sealed shell. The shell is typically sealed, as refrigerant circulates within the shell to cool the motor. Even though the shell is sealed, an electric connection must still extend into the shell to supply power to the motor.
The connection through the shell must be adequately sealed, and the arrangement of a terminal housing and compressor shell has made this a challenge.
SUMMARY
A sealed compressor has an electric motor received within a hermetically sealed shell. The electric motor drives a compressor pump unit. An electric connection provides electric power to the motor. A terminal housing is mounted on the shell, with a terminal plug for supplying electrical power from outside of the shell into a connector within the shell. A grommet is at an opening in the shell which allows passage of the electric connection from the terminal plug to the electric connector. The grommet has a first surface positioned on an opposed side of a wall of a housing spaced from the shell, and a second surface sealing against the shell. The grommet has an interior portion allowing passage of the electrical connections from the terminal plug into the electric connector within the shell.
These and other features of the present invention can be best understood from the following specification and drawings, of which the following is a brief description.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an electric terminal connection through a sealed compressor shell.
FIG. 2 is a top view of a first embodiment grommet.
FIG. 3 is a cross-sectional view through the FIG. 2 grommet.
FIG. 4 shows a second embodiment grommet.
FIG. 5 shows a third embodiment grommet.
 DETAILED DESCRIPTION
FIG. 1 shows a sealed compressor 20 incorporating a compressor pump unit 22 and an electric motor 24. A shell 26 defines an interior which is sealed against fluid leakage. Refrigerant typically flows around the motor 24 within the shell 26. Electric power must be supplied to the motor 24, and an electric connector 28 is shown inward of the shell 26. A terminal connection 29 is shown extending from a terminal plug 31 which is connected within a fence or housing 42.
A cable 30 plugs into an end of the terminal connection 31 outwardly of the housing 42. A hole 33 allows the terminal plug 31 to exit the housing. A cover 46 is shown bolted at 200 to the housing at an ear 204 and hole 202 in cover 46.
A grommet 32 provides a fluid tight seal between the housing 42 and the shell 26. As shown, the grommet 32 has ears 44 sitting outwardly of an end of the housing 42, and an end 36 which seals against the shell 26.
As shown in this Figure, a spring 50 is schematically biasing the terminal plug 46 to maintain the connection between connector 28 and pin 29.
Grommet 32 is shown in a top view in FIG. 2. As shown, a bore 103 is hollow, and allows electrical connections to pass through. An upper circular portion 102 sits against the terminal plug (see FIG. 1) to provide a seal against the plug. An outer portion 104 sits outwardly of the terminal plug 42 to provide a seal.
A lower portion 106 sits within a bore through the compressor shell 26. As shown in FIGS. 2 and 3, the portion 106 extends further than does the portion 104. The portion 104 sits inwardly of the housing 42, and the portion 106 sits flush with the compressor shell 26.
Cutout portions 108 surround holes 109 for the bolts which will connect the terminal housing to the shell.
As shown in FIG. 4, an embodiment 132 of the grommet has a hollow interior bore, portion 116 which sits within the compressor shell, portion 110 which sits inwardly of the terminal box, and portion 102 which sits upwardly into the terminal plug. Notches 112 allow the passage of bolts.
FIG. 5 shows an embodiment 198, wherein the bore is sealed by a portion 200, but pin holes 202 are formed through the grommet for passage of the connecting pin.
The spring 50 is shown schematically, however, details of the spring are better disclosed in co-pending U.S. patent application Ser. No. 13/178,616, filed on even date herewith, and entitled “Secure Connection Terminal for Hermetic Compressor.” The cable is better disclosed in co-pending U.S. application Ser. No. 13/178,568, filed on even date herewith, and entitled “Terminal Connection for Sealed Compressor,” now U.S. Pat. No. 8,328,566, issued Dec. 11, 2012.
Although embodiments of this invention have been disclosed, a worker of ordinary skill in this art would recognize that certain modifications would come within the scope of this invention. For that reason, the following claims should be studied to determine the true scope and content of this invention.

Claims (5)

What is claimed is:
1. A sealed compressor comprising:
an electric motor received within a hermetically sealed shell, and said electric motor driving a compressor pump unit, an electric connection through said shell for providing electric power to said motor, a terminal housing mounted outwardly on said shell, with a terminal plug for supplying electrical power from outside of said shell into an electric connector within said shell, and a grommet at an opening in said shell which allows passage of the electric connection from said terminal plug to said electric connector, said grommet having a curved portion sealing against a face of said terminal plug facing said shell, and an outer surface sealing against an outer surface of said terminal housing facing said shell, with said grommet having an interior portion allowing passage of the electrical connections from said terminal plug into said electric connector within said shell.
2. The compressor as set forth in claim 1, wherein said grommet has a surface which sits flush within said opening in said compressor shell.
3. The compressor as set forth in claim 1, wherein said grommet has a central hollow passage to allow passage of the electrical connections.
4. The compressor as set forth in claim 1, wherein said grommet has a generally solid central portion, with pin holes allowing passage of electric pins to provide said electric connections.
5. The compressor as set forth in claim 2, wherein said grommet has a central hollow passage allow passage of the electrical connections.
US13/178,555 2011-07-08 2011-07-08 Sealing grommet for connection between terminal housing and interior of sealed compressor Active 2034-08-14 US9541087B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/178,555 US9541087B2 (en) 2011-07-08 2011-07-08 Sealing grommet for connection between terminal housing and interior of sealed compressor
FR1256443A FR2977741B1 (en) 2011-07-08 2012-07-05 SEAL WASHER FOR THE CONNECTION BETWEEN A TERMINAL HOUSING AND THE INTERIOR OF A HERMETIC COMPRESSOR
CN201210233236.0A CN102865209B (en) 2011-07-08 2012-07-06 For the sealing ring connected between terminal shell and closed compressor inside
DE102012013507A DE102012013507A1 (en) 2011-07-08 2012-07-06 Sealing grommet for the connection between the connection housing and the interior of a sealed compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/178,555 US9541087B2 (en) 2011-07-08 2011-07-08 Sealing grommet for connection between terminal housing and interior of sealed compressor

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US20130011278A1 US20130011278A1 (en) 2013-01-10
US9541087B2 true US9541087B2 (en) 2017-01-10

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US13/178,555 Active 2034-08-14 US9541087B2 (en) 2011-07-08 2011-07-08 Sealing grommet for connection between terminal housing and interior of sealed compressor

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US (1) US9541087B2 (en)
CN (1) CN102865209B (en)
DE (1) DE102012013507A1 (en)
FR (1) FR2977741B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8328566B1 (en) 2011-07-08 2012-12-11 Danfoss Scroll Technologies, Llc Terminal connection for sealed compressor
CN105442050B (en) * 2015-12-29 2017-11-07 湖南顶立科技有限公司 A kind of material container suitable for ingot furnace
CN107504178A (en) * 2017-08-23 2017-12-22 苏州达力客自动化科技有限公司 Dust ring
DE102019130582A1 (en) * 2019-11-13 2021-05-20 Hanon Systems Sealing arrangement of a plug connection for plugging in electrical connections and device for driving a compressor with the sealing arrangement

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US3495028A (en) * 1964-11-23 1970-02-10 American Crucible Products Co Unitary hermetic connector with contained sealing means
US4840547A (en) * 1988-08-10 1989-06-20 Tecumseh Products Company Compressor including protective cap for hermetic terminal
US4966559A (en) * 1989-10-12 1990-10-30 Tecumseh Products Company Internal terminal block for compressor hermetic terminal
US5199898A (en) * 1991-09-23 1993-04-06 Tecumseh Products Company External terminal shield
US5385453A (en) * 1993-01-22 1995-01-31 Copeland Corporation Multiple compressor in a single shell
US7059839B2 (en) * 2002-12-10 2006-06-13 Tecumseh Products Company Horizontal compressor end cap with a terminal, a visually transparent member, and a heater well mounted on the end cap projection
US20080138226A1 (en) * 2005-04-14 2008-06-12 Yoshitaka Koitabashi Scroll Fluid Machine
US7763808B2 (en) * 2007-08-20 2010-07-27 Bristol Compressors International, Inc. Hermetic electrical feedthrough assembly for a compressor and method for making the same

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Publication number Priority date Publication date Assignee Title
GB823722A (en) * 1956-08-28 1959-11-18 Carr Fastener Co Ltd Improvements in and relating to plugs or grommets
JPS4857601U (en) * 1971-11-01 1973-07-23
US5584716A (en) * 1994-07-14 1996-12-17 Copeland Corporation Terminal assembly for hermetic compressor
JP2003184775A (en) * 2001-09-10 2003-07-03 Hitachi Ltd Scroll compressor and refrigeration system for ammonia-based refrigerant
EP1700067B1 (en) * 2003-12-30 2014-07-30 Emerson Climate Technologies, Inc. Compressor protection and diagnostic system
US8939734B2 (en) * 2007-08-28 2015-01-27 Emerson Climate Technologies, Inc. Molded plug for a compressor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495028A (en) * 1964-11-23 1970-02-10 American Crucible Products Co Unitary hermetic connector with contained sealing means
US4840547A (en) * 1988-08-10 1989-06-20 Tecumseh Products Company Compressor including protective cap for hermetic terminal
US4966559A (en) * 1989-10-12 1990-10-30 Tecumseh Products Company Internal terminal block for compressor hermetic terminal
US5199898A (en) * 1991-09-23 1993-04-06 Tecumseh Products Company External terminal shield
US5385453A (en) * 1993-01-22 1995-01-31 Copeland Corporation Multiple compressor in a single shell
US7059839B2 (en) * 2002-12-10 2006-06-13 Tecumseh Products Company Horizontal compressor end cap with a terminal, a visually transparent member, and a heater well mounted on the end cap projection
US20080138226A1 (en) * 2005-04-14 2008-06-12 Yoshitaka Koitabashi Scroll Fluid Machine
US7763808B2 (en) * 2007-08-20 2010-07-27 Bristol Compressors International, Inc. Hermetic electrical feedthrough assembly for a compressor and method for making the same

Also Published As

Publication number Publication date
CN102865209A (en) 2013-01-09
FR2977741A1 (en) 2013-01-11
FR2977741B1 (en) 2019-05-31
US20130011278A1 (en) 2013-01-10
CN102865209B (en) 2017-07-04
DE102012013507A1 (en) 2013-01-10

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